Download CORREVIT LFII P USER MANUAL VOLUME I

CORREVIT LFII P
®
Non-Contact Optical Sensor
for
slip-free measurement
of vehicle speed and distance
USER MANUAL
VOLUME I
Sensor Hardware
User Manual
CORREVIT® LFII P Sensor
Note:
For a general description of the CeCalWin Pro Software please refer
to the separate user manual Volume II.
For the specific software description please refer to the separate
user manual Volume III.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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CORREVIT® LFII P Sensor
User Manual
VOLUME I - Sensor Hardware
Table of Contents
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.
Extent of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.2 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.2.1 PC (RS232) / CAN Outputs . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.2.2 Power Connector Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.2.3 Analog/Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.3 Internal Signal Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.3.1 Filter Values for Speed and Slip Angle Output . . . . . . . . . . . . .11
3.3.2 Optional Acceleration Signal . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.4 Typical Data Plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.
Set-up and Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.1 Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2 Sensor Mounting Jig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.3 Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.3.1 Mounting with Suction Holders . . . . . . . . . . . . . . . . . . . . . . . .13
4.3.2 Mounting with Magnetic Plate Mounting Unit . . . . . . . . . . . . . .15
4.3.3 Wheel Mount Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.4
5.
Connecting the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Appendix:
- Technical Drawings
CORREVIT® is a registered trademark of CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar Germany. In a continuous
effort to improve our products CORRSYS-DATRON reserves the right to change specifications without prior notice.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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User Manual
CORREVIT® LFII P Sensor
General Information
Legal Notice
Information furnished is believed to be accurate and reliable. However, CORRSYS-DATRON
assumes no responsibility for the consequences of use of such information nor for any infringement
of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of CORRSYS-DATRON. Specifications
mentioned in this publication are subject to change without notice and do not represent a commitment on the part of CORRSYS-DATRON. This publication supersedes and replaces all information
previously supplied.
All brand names are trademarks of their respective holders.
Copyright
©Copyright 2007, CORRSYS-DATRON
Revision
D061-50-01-04E 02/08
Contact
International Headquarters:
CORRSYS-DATRON Sensorsysteme GmbH
Charlotte-Bamberg-Str. 12
35578 Wetzlar / Germany
Phone ++49 (6441) 9282-0
Hotline ++49 (6441) 9282-82
Fax
++49 (6441) 9282-17
E-mail [email protected]
URL
www.corrsys-datron.com
North American Headquarters:
CORRSYS-DATRON Sensorsystems, Inc.
21654 Melrose Avenue, Building 16
Southfield, MI 48075 / USA
Phone ++1 (248) 204-0850
Toll-free++1 (800) 832-0732
Fax
++1 (248) 204-0864
E-mail [email protected]
URL
www.corrsys-datron.com
China Headquarters:
CORRSYS-DATRON Sensorsysteme GmbH, China Office
Room 708, JinTianDi International Mansion,
No. 998 RenMin Road, Shanghai (200021), P.R.China
Tel.: ++86-21-63114144
Fax: ++86-21-63114154
E-mail: [email protected]
URL: www.corrsys-datron.com.cn
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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Safety Instructions
Please read carefully before operating the equipment.
CORRSYS-DATRON is not responsible for damage that may occur when this system is used in
any way other than that for which it is intended.
To assure safe and proper operation, all supplied equipment, components and/or accessories must be
carefully transported and stored, as well as professionally installed and operated. Careful maintenance
and usage in full accordance with operating instructions is imperative.
CORRSYS-DATRON equipment should be installed and operated only by qualified persons who are
familiar with devices of this type.
Local regulations may not permit the operation of motor vehicles on public highways while the
equipment is mounted on the exterior of the vehicle.
• Use the equipment only for intended applications. Improper application is not advised.
• Do not modify or change the equipment or its accessories in any way.
• Improper use or mounting of the equipment may affect the safety of the vehicle and/or occupants.
• The equipment must not be mounted and/or operated in any way that may compromise vehicle or
and/or occupant safety.
• Equipment must be mounted firmly and securely.
• Use only original equipment, components and/or accessories included in the scope of delivery.
• Do not mount equipment, components and/or accessories near heat sources (e.g. exhaust).
• Do not use defective or damaged equipment, components and/or accessories .
• Always note correct pin assignments and operating voltages when connecting equipment to
power supplies, data acquisition/evaluation systems, and/or any other applicable system or
component. Equipment may be damaged if not properly connected and/or operated.
• For additional information, please call the CORRSYS-DATRON Hotline: ++49 (6441) 9282-82
or email: [email protected].
• Sensor head can become very hot and may cause injury if power has been applied to the
sensor for extended periods of time. This is especially true if the sensor is used in hot
environmental conditions.
Danger
• Invisible radiation from light emitting diodes!
Do not observe with optical instruments.
Laser class 1 M in compliance with DIN EN 60825 - 1:2001
• The sensor and/or sensor components may be damaged if power is applied for extended
periods, especially in hot environmental conditions.
Warning
• Disconnect power from the sensor if the vehicle is stationary for extended periods.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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User Manual
1. Overview
CORREVIT® LFII P
Non-Contact Optical
Sensor
for
slip-free measurement of
vehicle speed and distance
Art. No.
LFII P Sensor
14395
The new CORREVIT® LFII P Optical Sensor represents yet another a major step forward in the advancement of optical measurement technology. Based on the
Formula-1 proven CORREVIT® SF Sensor, the LFII P Sensor is even smaller and
lighter than the compact SF model.
The further miniaturization of the exceptionally lightweight LFII P Sensor enables
mounting positions -such as under the vehicle - that were virtually unimaginable until
now. Long-life, vibration-resistant infrared LED illumination and digital filters with
advanced DSP technology provide improved performance, even under harsh environmental conditions.
For connection to any current data acquisition system, the LFII P Sensor is equipped
with analog (0...10V) and digital outputs, as well as CAN Bus, RS232, and USB for
high-speed data transfer.
A protective optical-glass lens prevents damage to the optics and the illumination
source. The lens is optimized to the wavelength of the LED illumination source, and
can be easily replaced without use of special tools.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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Features
• Small and lightweight - just 250 g
• Distance and speed measurement up to 250 kph
• Adjustable filter time (unfiltered, 8 ... 512 ms)
• Speed linearity - desired distance < ± 0.5 %
Distance linearity < ± 0.2 %
• Improved features by application of advanced DSP technology
• Direct connection to PC or other evalutation systems
• Illumination by long-life, high-power infrared LEDs
• Signal outputs:
analog 0 ...10 V
digital 0-1000 pulses/m
CAN Bus V2.0B
USB 2.0 or RS232
• Negligible service and maintenance requirements as a result of durable technology
• Tested and used under extreme environmental conditions
Applications
The compact CORRSYS-DATRON LFII P Sensor is designed for use in dynamic
vehicle testing applications that require highly accurate measurement of the
following variables:
• Distance
• Speed
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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2. Extent of Delivery
2.
1.
4.
9.
8.
5.
3.
6.
7.
Standard delivery article no. 13996
1.
2.
3.
4.
5.
6.
7.
8.
9.
(1)
(1)
(1)
(1)
Sensor head LFII P Sensor (Art.no. 14395)
Electronic LFII / SFII (Art.no. 14269)
Sensor cable 5m MIL #K 048-1D2-10-5 (Art.no. 13795)
Power cable 2m SF, LF MIL 5P m bunch plug #K 042-24N-10-2
(Art.No. 13854)
(1) RS-232 Output cable, 2m, MIL # K 042-160-22-2 (Art.no. 13682)
(1) CAN Output cable, 2m #K 042-160-23-2 (Art.no. 13683)
(1) Signal cable Analog-Digital 2m LF 13P MIL - 2x BNC #K 054-2D2-10-2
(Art.no. 14274)
(1) Cooling element left + right #M 042-10-01-0- (Art.no. 14044)
(1) USB Adapter (USB 2.0 to RS232 Converter - Art.no. 13971)
Without illustration:
(1) Transport case, T2 (Art.no. 11228)
(1) Inlet for transport case (Art.no. 11127)
(1) Inlet for transport case (Art.no. 11131)
(1) Software CeCalWin (Art.no. 11343)
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3.
Technical Data
3.1
Specifications
Performance Specifications
Speed range:
Distance resolution
Uncertainty of measurement*:
Speed linearity - desired distance
Distance linearity
Working distance and range:
0.3 ... 250 kph
2.08 mm
< ±0.2%
< ± 0.5 %
< ± 0.2 %
200 +/-70 mm
Outputs
CAN Bus:
CAN V2.0B - switchable terminating
resistor (Intel or Motorola Format)
0...10V
1...1000 pulses/m
USB 2.0 or RS232 **
Analog Output:
Digitale Output:
USB:
System Specifications
Power supply:
Temperature range:
operation:
storage:
rel. humidity:
System Protection of the sensor head:
Illumination:
I
Dimensions of the sensor head (l x w x h):
Weight of sensor head:
Dimensions of the electronics (l x w x h):
Weight of the electronics:
Shock:
Vibration:
10,5 V ... 24 V; 28 W (12 VDC)
-25 ... 50°C
-40 ... 85°C
5 ... 80%, non condensing
IP 67
R-LEDs, 850 nm, laser class 1M
100 x 33 x 45 mm
(without plug)
250 g
130 x 86 x 33 mm
approx. 490 g
50 g half-sine, 6 ms
10 g, 10 ... 150 Hz
USB interface for connection to the PC, automatic sensor identification, function control.
INVISIBLE RADIATION FROM LIGHT EMITTING DIODES!
DO NOT OBSERVE WITH OPTICAL INSTRUMENTS
LASER CLASS 1M IN COMPLIANCE WITH DIN EN 60825-1:2001
* with calibration on the test surface
** please choose when placing an order!
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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3.2
Pin Assignments
3.2.1 Pin Assignment: PC(RS 232) / CAN Outputs
Cable: 5-pin MIL to 9-pin D-SUB - RS232: #K042-160-22-2m / CAN: #K042-160-23-2m
RS-232-/CAN
Pin 1: RXD
Pin 2: TXD
Pin 3: DGND
Pin 4: CAN Low
Pin 5: CAN High
3.2.2 Pin Assignment: Power Connector
Cable: 5-pol. #K042-24N-10-2m
Power Connector
Pin 1:
+12V
Pin 2:
+12V
Pin 3:
Case
Pin 4:
0V
Pin 5:
0V
MIL connector
3.2.3 Pin Assignment: Analog- / Digital Outputs
Cable: #K053-82D-10-2m
Analog/Digital
Pin 1: ANA_OUT3
Pin 2: ANA_OUT4
Pin 3: AGND
Pin 4: DIG_OUT1
Pin 5: DIG_OUT2
Pin 6: DIG_OUT3
Pin 7: DIG_OUT4
Pin 8: AGND
Pin 9: ANA_OUT1
Pin 10: ANA_OUT2
Pin 11: AGND
Pin 12: DGND
Pin 13: DGND
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3.3 Internal Signal Filtering
Signals may be smoothed using a moving average filter, which can be set to different time values.
Note that signal detail and dynamics will decrease as the signal becomes decreasingly smooth.
3.3.1 Filter Values for Speed
filter value
•
•
•
•
•
•
•
8 ms
16 ms
32 ms
64 ms
128 ms (default setting)
256 ms
512 ms
increased signal detail and dynamics (as well as noise)
minimum signal delay
smoothest signal
maximum signal delay
Use CeCalWin to change filter settings.
3.3.2 Optional Acceleration Signal
The acceleration signal is calculated internally from the filtered speed signal. A shorter filter time will
give a more noisy acceleration signal.
The acceleration signal is additionally filtered with a 2s filter.
3.4 Typical Data Plots
Brake test
speed/acceleration
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4. Set-up and Connection
4.1 Mounting Options
200 mm
200 mm
longitudinal mounting only
200 mm
Road surface
The mounting distance from the lower
surface of the sensor body
to the road surface must be 200 ±70 mm.
i
Notice:
In wet or snowy conditions, do not mount sensors in areas of excessive
spray, i.e. directly behind the rear wheels. This will help to prevent measurement anomalies that can be caused by spray and/or blowing snow.
4.2 Sensor Mounting Jig
Protection glass
MTT00-10-35-PN
13 pin MIL connector
Objective
Lens
Mounting holes
LED Illumination
For proper sensor mounting, use only M5 screws with a maximum thread engagement depth of 50
mm. Ideal length of screws is between 40 und 50 mm.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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4.3 Mounting Instructions
4.3.1 Suction Mounting Unit
1. Pre-assemble the CORRSYS-DATRON Suction Mounting
Unit (Art.No. 13990) as shown in Fig. 1.1.
Fig. 1.1
2. Position the Suction Mounting Unit parallel to the vehicle
body (e.g. at the driver-side door), as shown in Fig. 2.1.
To assure proper function of the suction holders, the
mounting area must be free of grease, oil, dust and other
contaminants. For this reason it its necessary to clean the
painted surface in the mounting area before attaching the
suction holders. Do not use cleaning products that leave
residue of any kind on the surface.
Fig. 2.1
3. Adjust the Mounting Unit perpendicular to the ground:
- Loosen the black levers at each suction holder so that
the suction holder brackets slide freely.
- Position the Mounting Unit so that is perpendicular to
the ground (vertical).
- Re-tighten both levers.
bracket
black lever
Fig. 3.1b
Fig. 3.1a
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4. When the Mounting Unit is correctly positioned, press the
suction holders - one after the other - firmly against the
vehicle body to flatten the rubber pads against the body
surface. Then, fold the grey levers toward suction
holders to produce a vacuum, which will secure the
suction holders to the vehicle body.
When producing the vacuum, you will feel a distinct
resistance. If the suction created is not sufficient to
secure the holder(s), check to be certain that the
mounting surface is clean.
Always inspect the Suction Mounting Unit before
use. Special attention should be paid to the
condition of the rubber suction pads, which must
be absolutely intact. Replace damaged pads
immediately.
Fig. 4.1
Use of a safety line is recommended.
5. Measure the sensor mounting height to be sure that the
sensor is within the specified vertical operating range of
200 ±70 mm (see pages 9 and 12). This distance is measured from the bottom of the sensor body to the road or
track surface. NOTE: The bottom of the heat sink/sensor
mounting plate will be flush with the bottom surface of the
sensor, so the mounting height can be measured from the
bottom surface of the heat sink/sensor mounting plate.
If the sensor is not within the specified vertical operating
range, loosen the black levers at each suction holder and
slide the vertical mounting rod up or down, as required,
then re-tighten both levers.
Fig. 5.1
If additional adjustment is required, fold the grey levers on
the suction holders down to release suction, then remove
the suction holders from the vehicle body by pulling the
black tab on each holder. Reposition the Mounting Unit so
that the mounting height is correct, then proceed with the
mounting procedure described in Step 3 (page 12).
6. Insert the included sensor mounting screws through the
mounting holes in the sensor, then into the mounting holes
in the heat sink/mounting plate and tighten the screws.
Fig. 6.1
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7. Connect the signal cable to the sensor.
Fig. 7.1ba
Fig. 7.1b
8. Route the signal cable trough the side window, into the
interior of the vehicle and connect it to data acquisition,
then secure the cable to the vertical mounting rod with
with a cable tie.
Fig. 8.1
4.3.2 Magnetic Plate Mounting Unit
1. Pre-assemble the CORRSYS-DATRON Magnetic Plate
Mounting Unit (Art.No. 14091) as shown in Fig. 1.2.
Fig. 1.2
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2. Position the Magnetic Mounting Unit parallel to the vehicle body
(e.g. at the driver-side door), as shown in Fig. 2.2. The magnetic plates will automatically hold fast to the (metal) vehicle
door/body panel.
Fig. 2.2
3. Adjust the Mounting Unit perpendicular to the ground:
- Loosen the black levers at each magnetic holder so that
the magnetic holder brackets slide freely.
- Position the Mounting Unit so that is perpendicular to
the ground (vertical).
- Re-tighten both levers.
bracket
black lever
Abb. 3.2b
Use of a safety line is recommended.
Fig. 3.2a
4. Measure the sensor mounting height to be sure that the sensor
is within the specified vertical operating range of 200 ± 70 mm
(see pages 9 and 12). This distance is measured from the bottom of the sensor body to the road or track surface.
NOTE: The bottom of the heat sink/sensor mounting plate will
be flush with the bottom surface of the sensor, so the mounting
height can be measured from the bottom surface of the heat
sink/sensor mounting plate.
If the sensor is not within the specified vertical operating range,
loosen the black levers at each magnetic holder and slide the
vertical mounting rod up or down, as required, then re-tighten
both levers.
If additional adjustment is required, release the magnetic plates
by pulling them away from the vehicle with the black handles.
Reposition
the
Mounting
Unit
so
that
the
mounting height is correct, then proceed with the
mounting procedure described above.
Fig. 4.2
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6. Insert the included sensor mounting screws through the
mounting holes in the sensor, then into the mounting holes
in the heat sink/mounting plate and tighten the screws.
Abb. 5.2
7. Connect the signal cable to the sensor.
Abb. 6.2a
Abb. 6.2b
8. Route the signal cable trough the side window, into the
interior of the vehicle and connect it to data acquisition,
then secure the cable to the vertical mounting rod with
with a cable tie.
Abb. 7.2
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4.3.3 Wheel Mount
The CORRSYS-DATRON Wheel Mount System for CORREVIT® LF Sensors is designed to enable
precision tire-slip measurement.
The following mounting units are recommended.
Sensor Wheel Mounting Unit (Art. No. 14178) consisting of:
(1) Torsion rod with protective boot
(1) Suction holder
(1) Torsion rod mounting clamp
(1) Mounting disk with mounting hub
(6) Centering stars (1 each for 3-, 4- and 5-lug hubs (Art. No 11295, 11293, 11294)
Mounting collets for various lug nut sizes:
Standard dimensions:
17 mm, #10070
19 mm, #10071
21 mm, #10072
further on request
1. Remove hubcap or any covering over wheel nuts and
clean dirt/debris from wheel nuts.
2. Place collets on wheel nuts.
Fig. 1.3
3. Position the mounting disc and attach it loosely to collets
with mounting bolts and washers.
NOTE: The mounting disc has 3 sets of slots for proper
alignment with 3-, 4-, and 5-lug configurations. Each set of
slots is marked 3x, 4x or 5x, corresponding the number of
lugs.
Fig. 2.3
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4. Place the centering star tightly against the
mounting disk and position the concave edges of
the centering star against the washers on the
mounting bolts, as shown. Then, turn the
centering star until it is tight against all of the
washers to ensure that the mounting disk is
properly centered on the wheel.
Fig. 3.3
5. Continue to hold the centering star tightly against the
mounting washers and mounting disk, then tighten the
mounting bolts in a cross pattern, using an allen wrench.
Fig. 4.3
6. Using an allen wrench, loosen the set-screw at the
bottom of the torsion rod retainer clamp and place the
retainer clamp onto the mounting hub.
NOTE: The set screw should not be tightened until the
torsion rod is properly positioned, see Step 11. (page 20).
torsion rod
mounting hub
retainer clamp set screw
Fig. 5.3
7. Slip the protective boots over the lower and upper
sections of the torsion rod. Then, fit the upper section of
the torsion rod into the joiner at the top of the lower
section of the torsion rod. Check the safety line to be
sure it is secured to the torsion rod.
A safety line should always
be used to avoid damage or
injury in the event that a
suction holder separates
from the vehicle body during
the test drive.
safety line
protective boots
Fig. 6.3
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8. To assure proper function of the suction holders, the
mounting area must be free of grease, oil, dust and other
contaminants. For this reason it its necessary to clean the
painted surface in the mounting area before attaching the
suction holders. Do not use cleaning products that leave
residue of any kind on the surface. Place the suction
holders firmly against the vehicle fender and latch the
suction holder lock handles (latched position is
approximately parallel to vehicle fender surface).
When producing the vacuum, you will feel a
distinct resistance
Fig. 7.3
9. Tighten the set screws that secure the upper and lower
sections of the torsion rods together, using an allen
wrench.
Fig. 8.3
10.If necessary, adjust the torsion rod so that it is parallel
to the vehicle, then tighten the nut that secures the
suction holder mounting to the torsion rod.
Fig. 9.3
11. Tighten the retainer clamp set-screw with an allen
wrench.
Fig. 10.3
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12.Secure the safety line at a suitable location on the vehicle.
Fig. 11.3
13.Loosen the sensor mounting retainer set screw with an
allen wrench.
Place the mounting plate onto the mounting hub and
re-tighten the set-screw.
Insert the included sensor mounting screws through the
mounting holes in the sensor, then into the mounting
holes in the mounting plate and tighten the screws.
Fig. 12.3
14.Measure the sensor mounting height to be sure that the
sensor is within the specified vertical operating range of
200 ± 70 mm (see pages 9 and 12). This distance is
measured from the bottom of the sensor body to the road
or track surface. If the sensor is not within the specified
vertical operating range, first loosen the screws and
move the sensor up or down, as required, in the
channels on the mounting plate and measure again.
If this adjustment is insufficient, remove the mounting
plate from the retainer clamp using an allen wrench.
Move the plate up or down as required and
re-attach the plate to the mounting plate, then securely
re-mount the sensor to the mounting plate.
bottom of
sensor
Fig. 13.3
15.Connect the signal cable to the sensor, then wind the
cable loosely around the torsion bar.
WARNING: Be sure to leave enough slack in the
cable to allow for full-lock steering changes, but
use caution to assure that the cable is not wound
Danger too loosely around the torsion bar. Under no
circumstances should the cable be loose enough
to touch the tire or to be pulled under the fender
during testing. Either circumstance would
inevitably result in damage to the equipment and
could also cause an accident.
Finally, connect the cable to data acquisition.
Fig. 14.3
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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User Manual
16.If desired, mount the optional heat sink onto the sensor
head using an allen wrench.
Fig. 15.3
4.4 Connecting the sensor
Sensor Connections
Sensor Electronic Connections
to
Sensor
Analog
& Digital
Output
Connector
CAN
& RS232
Connector
to
Power
Supply
to
Electronics Box
Reverse Polarity Protection
The electronic unit is equipped with reverse polarity protection. In the event that polarity is inverted,
the unit will not be damaged but the power LED will illuminate red! Immediately disconnect power
from the unit and correct the power supply connection.
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CORREVIT® LFII P Sensor
To connect the sensor to a PC or laptop for set-up and calibration with
CeCalWin Software:
1. Connect the sensor signal output to the signal input on the electronics with the 5m Sensor to
Electronics Box Cable (Art. No. 13795).
2. Connect the electronic to a PC operating CeCalWin Software via the RS232 Output Cable, 2m
(Art. No. 13682)
3. Be sure that the individual switches on each power output circuit on the power distribution unit are
in the "OFF" position.
4. Connect the supply cable from the electronics to a CORRSYS-DATRON power distribution box.
5. Start the vehicle engine and carefully connect the power distribution unit to the vehicle power supply.
6. Switch the distribution box power circuit ON to send power to the sensor electronics box(es).
7. The sensor is now ready for set-up and calibration with CeCalWin Software.
See Using the CeCalWin Software Package for complete details.
To connect the sensor to data acquisition:
If the sensor is currently connected to PC for set-up/calibration:
1. Disconnect the RS232 Output Cable (Art. No. 13682) from the PC/laptop.
NOTE: It is not necessary to power down the sensor/electronic before disconnecting
or connecting the signal cable.
2. Connect the electronic to data acquisition:
- for Serial connection, simply connect the RS232 Output Cable, 2m (Art. No. 13682) to the data
acquisition system.
or
- for CAN connection, disconnect the RS232 Output Cable and connect the electronic to data
acquisition via CAN Output Cable, 2m (Art. No. 13683).
If the sensor is not already connected to PC for set-up/calibration:
1. Connect the sensor signal output to the signal input on the electronic with the 5m Sensor to
Electronics Box Cable (Art. No. 13795).
2. Connect the electronic to data acquisition:
- for CAN connection, use CAN Output Cable, 2m (Art. No. 13683)
or
- for Serial connection, use RS232 Output Cable, 2m (Art. No. 13682)
3. Be sure that the individual switches on each power output circuit on the power distribution unit are
in the "OFF" position.
4. Connect the supply cable from the electronics to a CORRSYS-DATRON power distribution box.
5. Start the vehicle engine and carefully connect the power distribution unit to the vehicle power supply.
6. Switch the distribution box power circuit ON to send power to the sensor electronics box(es).
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CORREVIT® LFII P Sensor
5. Troubleshooting
When troubleshooting the CORREVIT® LFII P
begin by checking the following:
Cables and power supply
• Check all connections to determine that each is complete and that the system is connected to
a power supply that provides voltage output within the specified range.
• Check to determine that the correct cables have been used for all connections.
• The following problems can be caused by incorrect or incomplete cable connections and/or
connection to incorrect power supply voltage:
- Output signals are not available to data acquisition and/or connected PC.
- A sensor will not go out of standstill mode with vehicle motion.
Status LED’s on sensor electronic boxes
• If all connections are correct and no faults are present, the green "ST" (standstill) LED will be
illuminated.
• If the Sensor is in Standstill and the "ST" LED is not illuminated, polarity has been reversed and
must be corrected.
Operating range
If a sensor is mounted out of the recommended height range (standoff distance), it may not go out of
standstill mode with vehicle motion, and no measurement signals will be output. Check and correct
mounting as necessary.
Sensor lens
The sensor lens (located on the underside of the sensor housing) may occasionally become dirty,
preventing proper operation. Check and clean the sensor lens regularly.
Software
If one or more output signals appear to be incorrect, the sensor may have been set-up incorrectly via
CeCalWin Software. Check all relevant settings in CeCalWin:
- Check calibration factor
Environmental conditions
The sensor may occasionally interpret heavy spray from snow or water as part of the road or track surface, producing unexplained spikes in the output signals and/or other anomalous measurement
artifacts. Sensors should be mounted away from the heaviest spray areas, especially directly behind
the rear wheels.
Electromagnetic interference
If the sensor starts to send output signals without vehicle motion, triggering may have been caused by
excessive electromagnetic interference from the test vehicle. To correct this condition, reset the sensor
by disconnecting from power and then re-connecting, or by switching power off and then back on at
the power distribution box. If the condition persists, disconnect sensor from vehicle ground and isolate
it at all mounting points.
If none of the above recommendations provides a solution, you may wish
to contact CORRSYS-DATRON. Before doing so, please be ready to supply
the following:
• A .ccw file saved from CeCalWin software to serve as an example of the problem or fault
condition.
• A list of all outputs that appear to be problematic, i.e. CAN, RS-232.
• The serial numbers of all relevant components.
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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APPENDIX
CORREVIT® LFII P Sensor
L
APPENDIX A: Technical Drawings
© 2008 CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany
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